World’s first LNG-powered heavy lift construction vessel completes trials

LEIDEN, The Netherlands: June 2019. Heerema Marine Contractor’s (HMC) newest semi-submersible crane vessel Sleipnir, the world’s first LNG-powered Construction Vessel, has successfully completed her sea trials and crane load tests.

HMC is a marine contractor in the international offshore oil and gas industry. Based in Leiden, the company transports, installs and removes all types of offshore facilities.

During Sleipnir’s sea trials all major systems performed according to specifications or even better. The vessel’s speed was tested and when fully deploying all eight thrusters reached 12.2 knots, significantly reducing transit times to projects around the world.

The vessel’s two 10,000-tonne revolving cranes that can lift loads of up to 20,000 tonnes in tandem, were also put to the test. Being the largest crane vessel in the world, Sleipnir can lift huge loads and the tests showed she can easily meet the cranes’ specifications.

Operational tests were carried out successfully with loads of 11,000 tonnes per crane – 110 percent of its capacity. The HMC said the Dynamic Positioning system performed even better than specified and is able to keep Sleipnir within the size of a 30 x 30 cm. garden tile.

The vessel will now begin its maiden voyage to southern Spain for its first installation project in the Mediterranean.